Indicate wifi for incoming calls.

This is done in the call card by showing the wifi icon.

This is done in the notification, by change the subtext.

For international calls in particular, this helps users understand
how accepting a phone call will affect the cost of their call.

Change-Id: Ifebd9f9cc8598b7fe5b693673b27a485f7ecdf0f
3 files changed
tree: 9a735d56785427b16b85d2905008e92d24f79582
  1. proguard.flags
  2. res/
  3. src/